libstdc++-v3/testsuite/20_util/allocator/requirements/typedefs.cc

   1 // { dg-do compile { target c++11 } }
   2
   3 // Copyright (C) 2012-2021 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License
  17 // along with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20
  21 #include <memory>
  22 #include <type_traits>
  23
  24 // Check std::allocator for required typedefs.
  25
  26 using std::is_same;
  27 using std::allocator;
  28
  29 static_assert( is_same<allocator<int>::size_type, std::size_t>::value,
  30                "size_type" );
  31 static_assert( is_same<allocator<int>::difference_type, std::ptrdiff_t>::value,
  32                "difference_type" );
  33 #if __cplusplus <= 201703L
  34 static_assert( is_same<allocator<int>::pointer, int*>::value,
  35                "pointer" );
  36 static_assert( is_same<allocator<int>::const_pointer, const int*>::value,
  37                "const_pointer" );
  38 static_assert( is_same<allocator<int>::reference, int&>::value,
  39                "reference" );
  40 static_assert( is_same<allocator<int>::const_reference, const int&>::value,
  41                "const_reference" );
  42 #endif
  43 static_assert( is_same<allocator<int>::value_type, int>::value,
  44                "value_type" );
  45
  46 #if __cplusplus <= 201703L
  47 static_assert( is_same<allocator<int>::rebind<char>::other,
  48                        allocator<char>>::value,
  49                "rebind::other" );
  50 #endif
  51
  52 static_assert( is_same<allocator<int>::propagate_on_container_move_assignment,
  53                        std::true_type>::value,
  54                "propagate_on_container_move_assignment" );
  55
  56 static_assert( is_same<allocator<int>::is_always_equal, std::true_type>::value,
  57                "is_always_equal" );